A high-integration cooling liquid outflow device for an engine cylinder head

Abstract

The utility model provides a kind of high-integration cooling liquid outflow device of engine cylinder cover belongs to automobile engine structure technical field.This device is integrally casted by water pipe installation platform and cylinder cover body, water outlet hole is set on the water pipe installation platform, stainless steel water outlet pipe is interference press-fitted in the water outlet hole, the depth of the end of stainless steel water outlet pipe press-fitted into the water outlet hole is not less than 10mm structure design, solve the cooling liquid outflow device of cylinder cover in prior art, for the use scene and target customer of micro face / light passenger level commercial vehicle, overall structure is complex, installation step is more, and the problem of higher production cost.This high-integration cooling liquid outflow device includes: water pipe installation platform, integrally casted with cylinder cover body;Water outlet hole, set on water pipe installation platform;Stainless steel water outlet pipe, outer diameter is greater than the inner diameter of water outlet hole, stainless steel water outlet pipe is press-fitted in water outlet hole, and the depth of its end press-fitted into water outlet hole is not less than 10mm.

Description

Technical Field

[0001] This utility model belongs to the field of automotive engine structure technology, and in particular relates to a highly integrated coolant outflow device for engine cylinder head. Background Technology

[0002] For transversely mounted engines used in microvans / light commercial vehicles, the cylinder head is a one-piece structure, mounted on top of the engine and covering the top of the cylinder block, forming the combustion chamber together with the cylinder block. The cylinder head contains intake manifolds, exhaust manifolds, and a cooling water jacket. The intake manifolds draw air into the combustion chamber, while the exhaust manifolds expel the combustion gases. The cooling water jacket surrounds the combustion chamber, circulating coolant to remove heat generated during combustion and prevent engine overheating. The design of the cooling water jacket ensures that coolant flows evenly through key areas of the cylinder head, such as the vicinity of the combustion chamber and valve seats.

[0003] After flowing through the critical parts of the cylinder head, the coolant needs to exit the cylinder head through a coolant outlet device to carry away the high temperature inside the engine and enter the coolant tank for cooling. Existing coolant outlet devices include an outlet pipe, a pipe connector, a gasket, and a pipe mounting platform on the cylinder head. The pipe mounting platform and the cylinder head body are integrally cast. An outlet hole is provided on the pipe mounting platform, and the outlet pipe is connected to the pipe mounting platform via the pipe connector. The outlet pipe and the outlet hole are aligned, and a gasket is placed between the pipe mounting platform and the pipe connector.

[0004] The coolant discharge device for the cylinder head mentioned above generally uses bolt connections when installing the water pipe connection on the water pipe mounting platform, requiring multiple corresponding bolt holes to be made on the water pipe connection, the water pipe mounting platform, and the sealing gasket. Considering the usage scenarios and target customers of microvans / light commercial vehicles, while ensuring safety and performance, the component structure should be simplified as much as possible to improve maintainability and reduce production costs. However, the coolant discharge device for the cylinder head in the existing technology has a complex overall structure, many installation steps, and high production costs. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a highly integrated coolant outlet device for engine cylinder heads, which solves the problem that the coolant outlet devices for cylinder heads in the prior art are complex in overall structure, have many installation steps, and have high production costs for the use scenarios and target customers of microvans / light commercial vehicles.

[0006] To achieve the above and other related objectives, this utility model provides a highly integrated coolant outflow device for engine cylinder heads, comprising:

[0007] The water pipe mounting platform is cast integrally with the cylinder head body;

[0008] A water outlet is provided on the water pipe mounting platform;

[0009] A stainless steel water outlet pipe with an outer diameter larger than the inner diameter of the water outlet hole is press-fitted into the water outlet hole, and the end of the stainless steel water outlet pipe is press-fitted into the water outlet hole to a depth of not less than 10mm.

[0010] As described above, the highly integrated coolant outlet device for an engine cylinder head according to this utility model has at least the following features:

[0011] Beneficial effects:

[0012] This highly integrated coolant outlet device for engine cylinder heads is integrally cast with the cylinder head body via a water pipe mounting platform. The outlet hole is located on this platform, and a stainless steel outlet pipe is press-fitted into the outlet hole. Compared to existing technologies where the water pipe connector and mounting platform are bolted together, this design simplifies installation. It also eliminates the need for the water pipe connector, bolts, and multiple corresponding bolt holes on the connector, mounting platform, and gasket, thus simplifying the overall coolant outlet device structure. Furthermore, the design of the stainless steel outlet pipe being press-fitted into the outlet hole to a depth of at least 10mm, after eliminating the need for a gasket, prevents coolant leakage, further simplifying the overall structure and improving integration. Ultimately, this solves the problem of existing cylinder head coolant outlet devices being complex, requiring numerous installation steps, and incurring high production costs for microvan / light commercial vehicle applications and target customers. Attached Figure Description

[0013] Figure 1 The diagram shown is a schematic of a highly integrated coolant outflow device for an engine cylinder head according to this utility model.

[0014] Figure 2 The diagram shows a coolant outflow device for an engine cylinder head in the prior art.

[0015] Component designation explanation

[0016] 1. Cylinder head body, 2. Water pipe mounting platform, 3. Stainless steel water outlet pipe, 4. Liquid temperature sensor. Detailed Implementation

[0017] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0018] Please see Figures 1 to 2It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0019] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0020] Please see Figure 1 This utility model provides a highly integrated coolant outflow device for engine cylinder heads, comprising:

[0021] like Figure 1 The water pipe mounting platform 2 shown is integrally cast with the cylinder head body 1.

[0022] like Figure 1 The water outlet shown is located on the water pipe mounting platform 2.

[0023] like Figure 1 The stainless steel water outlet pipe 3 shown has an outer diameter larger than the inner diameter of the water outlet hole. The stainless steel water outlet pipe 3 is press-fitted into the water outlet hole. Because the outer diameter of the stainless steel water outlet pipe 3 is larger than the inner diameter of the water outlet hole, the stainless steel water outlet pipe 3 is press-fitted into the water outlet hole with an interference fit, and the depth of its end pressed into the water outlet hole is not less than 10mm.

[0024] like Figure 1 and Figure 2As shown, the highly integrated coolant outlet device for this engine cylinder head is integrally cast with the cylinder head body 1 via a water pipe mounting platform 2. The outlet hole is located on the water pipe mounting platform 2, and a stainless steel outlet pipe 3 is press-fitted into the outlet hole. Compared to the prior art where the water pipe connection and water pipe mounting platform 2 are bolted together, this design simplifies installation. It also eliminates the need for the water pipe connection, thus eliminating the need for bolts and multiple corresponding bolt holes on the water pipe connection, water pipe mounting platform 2, and sealing gasket, thereby simplifying the overall structure of the coolant outlet device. Furthermore, the design of the stainless steel outlet pipe 3 being press-fitted into the outlet hole to a depth of at least 10mm, after eliminating the need for the sealing gasket, prevents coolant leakage, further simplifying the overall structure of the coolant outlet device and improving its integration. Ultimately, this design solves the problem of existing cylinder head coolant outlet devices being complex in structure, requiring numerous installation steps, and incurring high production costs for the use scenarios and target customers of microvans / light commercial vehicles.

[0025] In another implementation, please refer to Figure 1 The water pipe mounting platform 2 is located at the rear end of the cylinder head body 1 and protrudes outward from the outer surface of the cylinder head body 1 to avoid interference between the stainless steel water pipe 3 pressed into the water outlet hole and other parts inside the cylinder head.

[0026] In another implementation, please refer to Figure 1 The stainless steel water outlet pipe 3 is made of 430 stainless steel. 430 stainless steel is a ferritic stainless steel that mainly contains about 16%-18% chromium and no nickel. This composition makes its cost relatively low, while also providing a certain degree of corrosion resistance. Although its corrosion resistance is not as good as that of 304 and 316 stainless steel, it can still work normally in some mildly corrosive environments. At the same time, it also has good heat resistance and can maintain stable performance within a certain temperature range. It is very suitable for use in microvans / light commercial vehicles where cost control is relatively strict and the working environment is relatively good.

[0027] In another implementation, please refer to Figure 1 The water pipe mounting platform 2 and the cylinder head body 1 are integrally cast from aluminum alloy. The aluminum alloy cylinder head has the advantages of being lightweight and having good thermal conductivity. It can quickly conduct away the heat generated by combustion, which helps to improve the thermal efficiency of the engine. Moreover, aluminum alloy has good processing performance and can be manufactured into complex shapes to meet the design requirements of various channels inside the cylinder head. It also facilitates the interference fit of the stainless steel water pipe 3.

[0028] In another implementation, please refer to Figure 1The coolant outlet device also includes a liquid temperature sensor 4, which is used to monitor the temperature of the coolant in the outlet pipe; this allows users to judge the engine's operating status by the temperature of the coolant.

[0029] In other implementations, such as Figure 1 As shown, a monitoring slot is also provided on the water pipe mounting platform 2, and the liquid temperature sensor 4 is installed in this monitoring slot. Located on the same platform as the outlet pipe, it is not only easy to install, but also provides more accurate monitoring of the coolant temperature due to its proximity to the outlet. The working principle of the liquid temperature sensor 4 can be simply summarized as follows: it contains an internal thermistor. The resistance of the thermistor changes with temperature; when the coolant temperature rises, the resistance decreases; when the coolant temperature drops, the resistance increases. The liquid temperature sensor 4 converts the resistance change of the thermistor into an electrical signal through a circuit. This electrical signal is generally an analog voltage signal or a frequency signal. Based on the resistance value of its internal thermistor, the liquid temperature sensor 4 outputs a voltage signal between 0-5V, which corresponds to the coolant temperature. The ECU can determine the engine coolant temperature by reading this voltage signal.

[0030] In summary, this utility model integrates the water pipe mounting platform 2 with the cylinder head body 1 through integral casting. The water outlet is located on the water pipe mounting platform 2, and the stainless steel water outlet pipe 3 is press-fitted into the water outlet. Compared with the prior art where the water pipe connection and the water pipe mounting platform 2 are bolted together, the installation is much simpler. It also eliminates the need for the water pipe connection, thus eliminating the need for bolts and multiple corresponding bolt holes on the water pipe connection, water pipe mounting platform 2, and sealing gasket, thereby simplifying the structure of the entire coolant outlet device. Furthermore, the design of the stainless steel water outlet pipe 3 being press-fitted into the water outlet to a depth of not less than 10mm, after eliminating the sealing gasket, prevents coolant leakage, further simplifying the structure of the entire coolant outlet device and improving its integration. Ultimately, this solves the problem that the existing cylinder head coolant outlet device, for the use scenarios and target customers of microvans / light commercial vehicles, has a complex overall structure, numerous installation steps, and high production costs. Therefore, this utility model effectively overcomes the shortcomings of the prior art and has high industrial application value.

[0031] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A highly integrated coolant outflow device for an engine cylinder head, characterized in that, include: The water pipe mounting platform is cast integrally with the cylinder head body; A water outlet is provided on the water pipe mounting platform; A stainless steel water outlet pipe with an outer diameter larger than the inner diameter of the water outlet hole is press-fitted into the water outlet hole, and the end of the stainless steel water outlet pipe is press-fitted into the water outlet hole to a depth of not less than 10mm.

2. The highly integrated coolant outflow device for an engine cylinder head according to claim 1, characterized in that: The water pipe mounting platform is located at the rear end of the cylinder head body and protrudes outward from the outer surface of the cylinder head body.

3. The highly integrated coolant outflow device for an engine cylinder head according to claim 1, characterized in that: The stainless steel water outlet pipe is made of 430 stainless steel.

4. The highly integrated coolant outflow device for an engine cylinder head according to claim 1, characterized in that: The water pipe mounting platform and the cylinder head body are integrally cast from aluminum alloy.

5. The highly integrated coolant outflow device for an engine cylinder head according to claim 1, characterized in that: It also includes a liquid temperature sensor for monitoring the temperature of the coolant in the outlet pipe.

6. The highly integrated coolant outflow device for an engine cylinder head according to claim 5, characterized in that: A monitoring tank is also provided on the water pipe mounting platform, and the liquid temperature sensor is installed in the monitoring tank.

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